Data processing and data products from 2017 to 2019 campaign of astronomical site testing at Ali, Daocheng and Muztagh-ata

Authors:
  • ZCZi-Huang Cao
    Zi-Huang Cao
  • JHJin-Xin Hao
    Jin-Xin Hao
  • LFLu Feng
    Lu Feng
  • HJHugh R. A. Jones
    Hugh R. A. Jones
  • JLJian Li
    Jian Li
  • JXJing Xu
    Jing Xu
  • LLLi-Yong Liu
    Li-Yong Liu
  • TSTeng-Fei Song
    Teng-Fei Song
  • JWJian-Feng Wang
    Jian-Feng Wang
  • HCHua-Lin Chen
    Hua-Lin Chen
  • YXYan-Jie Xue
    Yan-Jie Xue
  • HSHuang Shen
    Huang Shen
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Abstract
Based on previous site testing and satellite cloud data, Ali, Daocheng and Muztagh-ata have been selected as candidate sites for the Large Optical/Infrared Telescope (LOT) in China. We present the data collection, processing, management and quality analysis for our site testing based on using similar hardware. We analyze meteorological data, seeing, background light, cloud and precipitable water vapor data from 2017 March 10 to 2019 March 10. We also investigated the relative usefulness of our all-sky camera data in comparison to that from the meteorological TERRA satellite data based on a night-by-night comparison of the correlation and consistency between them.We find a 6% discrepancy arising from a wide range of factors.

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